Add the bindings and the related documentation for the audio hdmitx
control glue of the Amlogic g12a SoC family
Signed-off-by: Jerome Brunet <jbru...@baylibre.com>
---
.../bindings/sound/amlogic,g12a-tohdmitx.txt | 55 +++++++++++++++++++
.../dt-bindings/sound/meson-g12a-tohdmitx.h | 13 +++++
2 files changed, 68 insertions(+)
create mode 100644
Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt
create mode 100644 include/dt-bindings/sound/meson-g12a-tohdmitx.h
diff --git a/Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt
b/Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt
new file mode 100644
index 000000000000..aa6c35570d31
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/amlogic,g12a-tohdmitx.txt
@@ -0,0 +1,55 @@
+* Amlogic HDMI Tx control glue
+
+Required properties:
+- compatible: "amlogic,g12a-tohdmitx"
+- reg: physical base address of the controller and length of memory
+ mapped region.
+- #sound-dai-cells: should be 1.
+
+Example on the S905X2 SoC:
+
+tohdmitx: audio-controller@744 {
+ compatible = "amlogic,g12a-tohdmitx";
+ reg = <0x0 0x744 0x0 0x4>;
+ #sound-dai-cells = <1>;
+};
+
+Example of an 'amlogic,axg-sound-card':
+
+sound {
+ compatible = "amlogic,axg-sound-card";
+
+[...]
+
+ dai-link-x {
+ sound-dai = <&tdmif_a>;
+ dai-format = "i2s";
+ dai-tdm-slot-tx-mask-0 = <1 1>;
+
+ codec-0 {
+ sound-dai = <&tohdmitx TOHDMITX_I2S_IN_A>;
+ };
+
+ codec-1 {
+ sound-dai = <&external_dac>;
+ };
+ };
+
+ dai-link-y {
+ sound-dai = <&tdmif_c>;
+ dai-format = "i2s";
+ dai-tdm-slot-tx-mask-0 = <1 1>;
+
+ codec {
+ sound-dai = <&tohdmitx TOHDMITX_I2S_IN_C>;
+ };
+ };
+
+ dai-link-z {
+ sound-dai = <&tohdmitx TOHDMITX_I2S_OUT>;
+
+ codec {
+ sound-dai = <&hdmi_tx>;
+ };
+ };
+};
diff --git a/include/dt-bindings/sound/meson-g12a-tohdmitx.h
b/include/dt-bindings/sound/meson-g12a-tohdmitx.h
new file mode 100644
index 000000000000..c5e1f48d30d0
--- /dev/null
+++ b/include/dt-bindings/sound/meson-g12a-tohdmitx.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DT_MESON_G12A_TOHDMITX_H
+#define __DT_MESON_G12A_TOHDMITX_H
+
+#define TOHDMITX_I2S_IN_A 0
+#define TOHDMITX_I2S_IN_B 1
+#define TOHDMITX_I2S_IN_C 2
+#define TOHDMITX_I2S_OUT 3
+#define TOHDMITX_SPDIF_IN_A 4
+#define TOHDMITX_SPDIF_IN_B 5
+#define TOHDMITX_SPDIF_OUT 6
+
+#endif /* __DT_MESON_G12A_TOHDMITX_H */
--
2.20.1
